Buggy code:
public class SIARDExportModule implements DatabaseHandler { private final Logger logger = Logger . getLogger ( SIARDExportModule . class ) ; private static final String ENCODING = "UTF-8" ; private ZipArchiveOutputStream zipOut ; private DatabaseStructure dbStructure ; private TableStructure currentTable ; private SchemaStructure currentSchema ; private int currentRow ; private Set < Object [ ] > BLOBsToExport ; private Set < Object [ ] > CLOBsToExport ; private SIARDExportHelper siardExportHelper ; public SIARDExportModule ( File siardPackage , boolean compressZip ) throws FileNotFoundException { } @ Override public void initDatabase ( ) throws ModuleException { } @ Override public void setIgnoredSchemas ( Set < String > ignoredSchemas ) { } @ Override public void handleStructure ( DatabaseStructure structure ) throws ModuleException , UnknownTypeException { } @ Override public void handleDataOpenTable ( String schemaName , String tableId ) throws ModuleException { } @ Override public void handleDataCloseTable ( String schemaName , String tableId ) throws ModuleException { } @ Override public void handleDataRow ( Row row ) throws InvalidDataException , ModuleException { } @ Override public void finishDatabase ( ) throws ModuleException { } private void exportDatabaseStructure ( DatabaseStructure structure ) throws ModuleException , UnknownTypeException , IOException { } private void exportSchemaStructure ( SchemaStructure schema ) throws ModuleException , UnknownTypeException , IOException { } private void exportTableStructure ( TableStructure table ) throws ModuleException , UnknownTypeException , IOException { } private void exportColumnStructure ( ColumnStructure column ) throws ModuleException , UnknownTypeException , IOException { } private SIARDExportHelper getSIARDExportHelper ( String product ) { } private String exportType ( String product , Type type ) throws ModuleException , UnknownTypeException , IOException { } private String exportTypeOriginal ( Type type ) { } private void exportPrimaryKey ( PrimaryKey primaryKey ) throws ModuleException , IOException { } private void exportForeignKey ( ForeignKey foreignKey ) throws ModuleException , IOException { } private void exportCandidateKey ( CandidateKey candidateKey ) throws ModuleException , IOException { } private void exportCheckConstraint ( CheckConstraint checkConstraint ) throws ModuleException , IOException { } private void exportTrigger ( Trigger trigger ) throws ModuleException , IOException { } private void exportViewStructure ( ViewStructure view ) throws ModuleException , UnknownTypeException , IOException { } private void exportRoutineStructure ( RoutineStructure routine ) throws ModuleException , UnknownTypeException , IOException { } private void exportUserStructure ( UserStructure user ) throws ModuleException , IOException { print ( "\t\t<user>\n" ) ; if ( ( user . getName ( ) ) != null ) { print ( ( ( "\t\t\t<name>" + ( user . getName ( ) ) ) + "<//name>\n" ) ) ; } else { throw new ModuleException ( ( "Error<seq2seq4repair_space>while<seq2seq4repair_space>exporting<seq2seq4repair_space>users<seq2seq4repair_space>structure:<seq2seq4repair_space>" + "user<seq2seq4repair_space>name<seq2seq4repair_space>cannot<seq2seq4repair_space>be<seq2seq4repair_space>null" ) ) ; } if ( ( user . getDescription ( ) ) != null ) { <START_BUG> print ( ( ( "\t\t\t<description>" + ( user . getName ( ) ) ) + "<//description>\n" ) ) ; <END_BUG> } print ( "\t\t<//user>\n" ) ; } private void exportRoleStructure ( RoleStructure role ) throws ModuleException , IOException { } private void exportPrivilegeStructure ( PrivilegeStructure privilege ) throws ModuleException , IOException { } private void exportDataOpenTable ( String schemaName , String tableName ) throws IOException { } private void exportDataCloseTable ( ) throws IOException { } private void exportRowData ( Row row ) throws ModuleException , IOException { } private void exportBinaryCell ( Cell cell , ColumnStructure column , int index ) throws ModuleException , IOException { } private void exportSimpleCell ( Cell cell , ColumnStructure column , int index ) throws IOException { } private void exportSimpleCellData ( SimpleCell simple , int index ) throws IOException { } private void exportLOB ( Cell cell , int cellIndex , int rowIndex , long length ) throws IOException { } private String getPathFile ( int colIndex , int cellIndex , int tableIndex , int schemaIndex , String ext ) { } private String getLobHeader ( int colIndex , int cellIndex , int tableIndex , int schemaIndex , long length , String ext ) { } private void createBLOB ( Cell cell , int colIndex , int cellIndex , int tableIndex , int schemaIndex ) throws ModuleException , IOException { } private void createCLOB ( FileItem fileItem , int colIndex , int cellIndex , int tableIndex , int schemaIndex ) throws ModuleException , IOException { } private void createTableXSD ( TableStructure table ) { } private void exportTableXSD ( TableStructure table ) throws IOException { } private void exportXSDColumnElement ( TableStructure table ) throws IOException { } private String getXSDType ( ColumnStructure col ) throws ModuleException , UnknownTypeException { } private String getArchivalDate ( ) { } private void print ( String s ) throws IOException { } }

Fix:
print ( ( ( "\t\t\t<description>" + ( user . getDescription ( ) ) ) + "<//description>\n" ) ) ;